Utils: Move new getSystemTimeZone() from DataHelper to SystemVersion,

which is a better place for it.

apps/susidns/src/java/src/i2p/susi/dns/FormatDate.java

@@ -3,8 +3,7 @@ package i2p.susi.dns;
 import java.util.Date;
 import java.text.DateFormat;
 
-import net.i2p.I2PAppContext;
-import net.i2p.data.DataHelper;
+import net.i2p.util.SystemVersion;
 
 /**
  * Format a date in local time zone
@@ -17,7 +16,7 @@ public abstract class FormatDate
     static {
 	DateFormat fmt = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
 	// the router sets the JVM time zone to UTC but saves the original here so we can get it
-        fmt.setTimeZone(DataHelper.getSystemTimeZone(I2PAppContext.getGlobalContext()));
+        fmt.setTimeZone(SystemVersion.getSystemTimeZone());
 	_dateFormat = fmt;
     }